function enterSnipCaller(SnipCaller $node)
{
while (($next = $node->getNextSibling()) instanceof PlaceholderValue) {
$node->addChild($next);
}
$mustValueType = false;
if ($node->hasChilds()) {
foreach ($node->getChilds() as $child) {
if ($child instanceof PlaceholderValue) {
$mustValueType = true;
} else {
if ($mustValueType) {
throw new SyntaxErrorException('if one placeholdervalue child exists, all children of SnipCaller must be placeholdervalue');
}
}
}
}
}
